EP3324694B1 - Verfahren zur übertragung von uplink-referenzsignalen, benutzerendgerät und basisstation - Google Patents

Verfahren zur übertragung von uplink-referenzsignalen, benutzerendgerät und basisstation Download PDF

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Publication number
EP3324694B1
EP3324694B1 EP15900780.6A EP15900780A EP3324694B1 EP 3324694 B1 EP3324694 B1 EP 3324694B1 EP 15900780 A EP15900780 A EP 15900780A EP 3324694 B1 EP3324694 B1 EP 3324694B1
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EP
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Prior art keywords
reference signal
uplink reference
user terminal
time unit
uplink
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EP15900780.6A
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English (en)
French (fr)
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EP3324694A1 (de
EP3324694A4 (de
Inventor
Jiafeng SHAO
Sha Ma
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to EP23219758.2A priority Critical patent/EP4362378A2/de
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Publication of EP3324694A4 publication Critical patent/EP3324694A4/de
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing

Definitions

  • aspects of the present disclosure relate to communications technologies, and in particular, to an uplink reference signal transmission method, a user terminal, and a base station.
  • LTE Long Term Evolution
  • a user terminal may send an uplink reference signal to a base station within a transmission time interval (TTI).
  • the base station may perform channel sounding, channel estimation, or frequency offset estimation for the user terminal according to the uplink reference signal sent by the user terminal, so as to schedule the user terminal according to a result of the channel sounding, or calibrate a frequency of uplink data of the user terminal according to a result of the frequency offset estimation and then receive, according to the calibrated frequency and a result of the channel estimation, the data sent by the user terminal.
  • the TTI in the current LTE system is 1 ms. The TTI may be reduced to implement a shorter round-trip time and a shorter data transmission delay.
  • the user terminal needs to send sufficient uplink reference signals to the base station. That is, within the TTI, the user
  • the TTI when the TTI is reduced, ensuring that the user terminal sends sufficient uplink reference signals decreases a capacity of data transmission by the user terminal within the TTI, reduces efficiency of data transmission, and decreases an uplink capacity of the system.
  • EP 2 775 759 relates to method for transmitting uplink reference signals, user equipment and base station.
  • US 2013/0135984 relates to apparatus and method for transmitting uplink data.
  • WO 2014/208859 relates to grouping based reference signal transmission for massive MIMO scheme.
  • aspects of the present disclosure provide an uplink reference signal transmission method, a user terminal, and a base station to resolve problems that a quantity of user terminals supported by a base station is limited and that a capacity of a communications system is limited.
  • the solution of each aspect of the present disclosure is applicable to an LTE communications system or an evolved LTE communications system, such as a Long Term Evolution-Advanced (LTE-A) communications system.
  • LTE communications system or the LTE-A communications system includes a time division duplex (TDD) communications system and a frequency division duplex (FDD) communications system.
  • TDD time division duplex
  • FDD frequency division duplex
  • FIG. 1 is a schematic structural diagram of a radio frame in a TDD communications system.
  • a radio frame may include 10 subframes: a subframe #0 to a subframe #9, and each subframe includes two 0.5 ms timeslots.
  • the 10 subframes may include uplink subframes, downlink subframes, and special subframes. Specific subframes corresponding to the uplink subframes, the downlink subframes, and the special subframes may be determined according to uplink-downlink configuration information and a table of correspondences between the uplink-downlink configuration information and subframe numbers. Correspondences between uplink-downlink configurations and subframe numbers in the TDD communications system may be shown in the following Table 1.
  • D is a downlink subframe
  • S is a special subframe
  • U is an uplink subframe
  • a special subframe in the TDD communications system includes a downlink pilot timeslot (DwPTS), a guard period (GP), and an uplink pilot timeslot (UpPTS).
  • DwPTS downlink pilot timeslot
  • GP guard period
  • UpPTS uplink pilot timeslot
  • Lengths corresponding to the DwPTS, the GP, and the UpPTS in the special subframe may be determined according to the following Table 2.
  • a total lengthof the special subframe is 30720 T s .
  • a length of the GP in the special subframe may be determined.
  • FIG. 2 is a schematic structural diagram of a radio frame in an FDD communications system.
  • a radio frame may include 20 timeslots: a timeslot #0 to a timeslot #19.
  • the 20 timeslots may be grouped into 10 subframes, and each subframe includes two 0.5 ms timeslots.
  • a maximum time unit is a 10 ms radio frame. This radio frame is divided into ten 1 ms subframes, and each subframe is further divided into two 0.5 ms timeslots.
  • NCP normal cyclic prefix
  • ECP extended cyclic prefix
  • a slot includes six time units.
  • every 12 subcarriers form a 180 kHz resource element (RE).
  • a minimum time-frequency resource unit is an RE.
  • the RE is a two-dimensional resource including one subcarrier in a frequency domain and duration of one time unit in time domain.
  • a resource block is a resource block including one slot in the time domain and 12 subcarriers in the frequency domain.
  • an RB For a normal cyclic prefix, an RB includes 84 REs.
  • an RB For an extended cyclic prefix, an RB includes 72 REs.
  • a TTI may be a subframe, or may be a timeslot, or even may be a time unit. If the TTI is a subframe, the TTI is 1 ms. If the TTI is a timeslot, the TTI may be 0.5 ms. If the TTI is a time unit, the TTI may be duration of the time unit, and the time unit may be an orthogonal frequency division multiple access (OFDMA) symbol or a single carrier frequency division multiple access (SC-FDMA) symbol in an LTE system with a 15 kHz subcarrier spacing, or a symbol in a communications system with a greater subcarrier spacing. It should be noted that the TTI in each aspect of the present disclosure may also include a plurality of time units but is shorter than a timeslot.
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single carrier frequency division multiple access
  • Aspect 1 of the present disclosure provides an uplink reference signal transmission method.
  • a user terminal may send an uplink reference signal of the user terminal to a base station by performing the uplink reference signal transmission method in Aspect 1.
  • the base station After receiving the uplink reference signal sent by the user terminal, the base station performs channel sounding, channel estimation, or frequency offset estimation for the user terminal according to the uplink reference signal, so as to schedule the user terminal according to a result of the channel sounding, or calibrate a frequency of uplink data of the user terminal according to a result of the frequency offset estimation and then receive, according to the calibrated frequency and a result of the channel estimation, the data sent by the user terminal.
  • FIG. 3 is a flowchart of an uplink reference signal transmission method according to Aspect 1 of the present disclosure. As shown in FIG 3 , the uplink reference signal transmission method may include the following steps.
  • a user terminal determines an uplink reference signal position according to first higher layer signaling, where the uplink reference signal position includes at least one uplink reference signal symbol group, and each uplink reference signal symbol group includes at least one time unit.
  • the user terminal may be, for example, user equipment (UE), a mobile station (MS), or a mobile terminal.
  • the mobile terminal may be, for example, a mobile phone, a notebook computer, or a tablet computer.
  • the first higher layer signaling may be any higher layer signaling received by the user terminal.
  • the first higher layer signaling may be radio resource control (RRC) signaling, medium access control (MAC) signaling, or other signaling.
  • RRC radio resource control
  • MAC medium access control
  • the base station may be a base station serving a cell in which the user terminal is located.
  • the uplink reference signal position may include uplink reference signal positions of a plurality of user terminals in the cell of the base station. That is, in the method of Aspect 1 of the present disclosure, the plurality of user terminals in the cell of the base station send, in the uplink reference signal position, uplink reference signals in uplink reference signal symbol groups corresponding to the user terminals.
  • the uplink reference signal position includes at least one uplink reference signal symbol group, where each uplink reference signal symbol group includes at least one time unit.
  • Each user terminal in the plurality of user terminals may correspond to an uplink reference signal symbol group in the uplink reference signal position.
  • Uplink reference signal symbol groups corresponding to different user terminals in the plurality of user terminals may be the same or may be different. If the uplink reference signal symbol groups corresponding to the different user terminals are the same, that is, time domain positions of uplink reference signals of the different user terminals are the same, frequency domain positions of the uplink reference signals of the different user terminals are different, and/or codeword sequences of the uplink reference signals of the different user terminals are different.
  • the uplink reference signal symbol groups corresponding to the different user terminals are different, that is, the time domain positions of the uplink reference signals of the different user terminals are the same, the frequency domain positions of the uplink reference signals of the different user terminals may be the same or may be different, and the codeword sequences of the uplink reference signals of the different user terminals may be the same or may be different.
  • the time unit of the at least one uplink reference signal symbol group included in the uplink reference signal position may include a subframe or a time unit in a timeslot.
  • the user terminal determines, in the uplink reference signal position according to second higher layer signaling or received first control information of a physical channel, an uplink reference signal symbol group corresponding to the user terminal, where the second higher layer signaling or the first control information includes indication information of the uplink reference signal symbol group corresponding to the user terminal.
  • the second higher layer signaling may also be any higher layer signaling received by the user terminal.
  • the second higher layer signaling may be the same as or different from the first higher layer signaling.
  • the physical channel may be a downlink physical channel, for example, a physical downlink control channel (PDCCH), or an enhanced physical downlink control channel (EPDCCH).
  • PDCH physical downlink control channel
  • EPDCCH enhanced physical downlink control channel
  • the user terminal may determine, from the uplink reference signal positions of the plurality of user terminals according to the indication information of the uplink reference signal symbol group corresponding to the user terminal in the second higher layer signaling or the first control information, the uplink reference signal symbol group corresponding to the user terminal.
  • the indication information of the uplink reference signal symbol group corresponding to the user terminal may include an identifier of the uplink reference signal symbol group corresponding to the user terminal, and/or an identifier of a time unit in the uplink reference signal symbol group corresponding to the user terminal.
  • the user terminal sends an uplink reference signal in a time unit of the uplink reference signal symbol group corresponding to the user terminal.
  • the user terminal may send the uplink reference signal in at least one time unit of the uplink reference signal symbol group corresponding to the user terminal.
  • the user terminal may further send uplink data in a time-frequency position different from the uplink reference signal position.
  • the user terminal may determine the uplink reference signal position according to the first higher layer signaling, where the uplink reference signal position includes the at least one uplink reference signal symbol group, and each uplink reference signal symbol group includes the at least one time unit; and the user terminal determines, in the uplink reference signal position according to the indication information that is of the uplink reference signal symbol group corresponding to the user terminal and is included in the second higher layer signaling or the first control information, the uplink reference signal symbol group corresponding to the user terminal, and then sends the uplink reference signal in the uplink reference signal symbol group corresponding to the user terminal.
  • each user terminal may send, in the uplink reference signal position, an uplink reference signal in an uplink reference signal symbol group corresponding to the user terminal. Because the user terminal sends, in the uplink reference signal position, the uplink signal in the uplink reference signal symbol group corresponding to the user terminal, uplink data and the uplink reference signal sent by the user terminal are sent separately on different time-frequency resources. Even if a TTI is reduced, sufficient uplink reference signals may still be sent in the uplink reference signal position, and there is no need to add a time unit corresponding to an uplink reference signal in the TTI. Therefore, a data transmission rate is ensured, and an uplink capacity of a system is ensured.
  • Aspect 2 of the present disclosure further provides an uplink reference signal transmission method.
  • each uplink reference signal symbol group includes a plurality of time units, a time interval of at least one time unit exists between every two time units in the plurality of time units.
  • each uplink reference signal symbol group includes a plurality of time units
  • the uplink reference signal symbol group corresponding to the user terminal includes a plurality of time units.
  • the user terminal sends the uplink reference signal in the plurality of time units in which the time interval of at least one time unit exists between every two time units. Therefore, a result of frequency offset estimation performed by the base station after the base station receives the uplink reference signal is more accurate.
  • the uplink reference signal position includes a time unit of an uplink reference signal symbol group that is designed in a timeslot
  • the time unit of the at least one uplink reference signal symbol group included in the uplink reference signal position may be a time unit in a timeslot.
  • a timeslot may include seven symbols, and each symbol is equivalent to a time unit.
  • FIG 4 is a schematic structural diagram of an uplink reference signal position in a timeslot according to Aspect 2 of the present disclosure. As shown in FIG 4 , in the timeslot, the uplink reference signal position may include three uplink reference signal symbol groups.
  • a first uplink reference signal symbol group includes time units corresponding to two symbols #0 and #3.
  • a second uplink reference signal symbol group includes time units corresponding to two symbols #1 and #4.
  • a third uplink reference signal symbol group includes time units corresponding to two symbols #2 and #5.
  • quantities of symbols corresponding to time units in the uplink reference signal symbol groups may be different. That is, time units corresponding to the six symbols in the timeslot may also be classified into another quantity of uplink reference signal symbol groups. That is, in the timeslot, the uplink reference signal position may include another quantity of uplink reference signal symbol groups. The another quantity may be greater than 3 and less than 6.
  • the user terminal may select one from a plurality of uplink reference signal symbol groups in the timeslot according to the indication information of the uplink reference signal symbol group corresponding to the user terminal in the second higher layer signaling or the first control information, as the uplink reference signal symbol group corresponding to the user terminal.
  • FIG 4 is merely an example of the uplink reference signal position in a timeslot.
  • a time unit of each uplink reference signal symbol group in the at least one uplink reference signal symbol group included in the uplink reference signal position may also be distributed in another manner. Details are not further described herein.
  • the uplink reference signal position includes a time unit of an uplink reference signal symbol group that is designed in a subframe
  • the time unit of the at least one uplink reference signal symbol group included in the uplink reference signal position may be a time unit in a subframe.
  • a subframe may include 14 symbols, and each symbol is equivalent to a time unit.
  • FIG 5 is a schematic structural diagram of an uplink reference signal position in a subframe according to Aspect 2 of the present disclosure. As shown in FIG 5 , in the subframe, the uplink reference signal position may include seven uplink reference signal symbol groups.
  • a first uplink reference signal symbol group includes time units corresponding to two symbols #0 and #7.
  • a second uplink reference signal symbol group includes time units corresponding to two symbols #1 and #8.
  • a third uplink reference signal symbol group includes time units corresponding to two symbols #2 and #9.
  • a fourth uplink reference signal symbol group includes time units corresponding to two symbols #3 and #10.
  • a fifth uplink reference signal symbol group includes time units corresponding to two symbols #4 and #11.
  • a sixth uplink reference signal symbol group includes time units corresponding to two symbols #5 and #12.
  • a seventh uplink reference signal symbol group includes time units corresponding to two symbols #6 and #13.
  • quantities of symbols corresponding to time units in the uplink reference signal symbol groups may be different. That is, the 14 symbols in the subframe may also be classified into another quantity of uplink reference signal symbol groups.
  • the uplink reference signal position may include another quantity of uplink reference signal symbol groups.
  • the another quantity may be greater than 7 and less than 14.
  • the user terminal may select one from a plurality of uplink reference signal symbol groups in the subframe according to the indication information of the uplink reference signal symbol group corresponding to the user terminal in the second higher layer signaling or the first control information, as the uplink reference signal symbol group corresponding to the user terminal.
  • FIG 5 is merely an example of the uplink reference signal position in a subframe.
  • a time unit of each uplink reference signal symbol group in the at least one uplink reference signal symbol group included in the uplink reference signal position may also be distributed in another manner. Details are not further described herein.
  • the time unit is a time unit different from a preset time unit
  • the preset time unit is a time unit of an uplink reference signal corresponding to a 1 ms TTI.
  • the time unit in each uplink reference signal symbol group may be a time unit different from the time unit of the uplink reference signal corresponding to the 1 ms TTI.
  • the time unit of the uplink reference signal sent by the user terminal namely, the time unit in the uplink reference signal symbol group corresponding to the user terminal and determined by the user terminal in the uplink reference signal position, is different from the time unit in which the user terminal of the 1 ms earlier release sends the uplink reference signal.
  • the time unit of the at least one uplink reference signal symbol group included in the uplink reference signal position may be a time unit in a subframe.
  • a subframe includes two timeslots, and each timeslot includes seven symbols, that is, a subframe may include 14 uplink symbols, and each symbol is equivalent to a time unit.
  • FIG 6 is a schematic structural diagram of a time unit of an uplink reference signal symbol group that is designed in a subframe according to Aspect 2 of the present disclosure. As shown in FIG 6 , the subframe may include 14 symbols #0 to #13.
  • a sounding reference signal (SRS) in the uplink reference signal corresponding to the 1 ms TTI in the current cell or the neighboring cell may appear on the symbol #13, and a demodulation reference signal (DM-RS) in the uplink reference signal appears on the symbols #3 and #10. Therefore, given a normal cyclic prefix, to avoid mutual interference between the uplink reference signal sent by the user terminal and the uplink reference signal sent by the user terminal of the earlier release with a 1 ms TTI in the current cell or the neighboring cell, symbols corresponding to the SRS and the DM-RS in the 1 ms TTI may be eschewed.
  • the time unit in each uplink reference signal symbol group in the uplink reference signal position may be a time unit corresponding to a symbol other than the three symbols #3, #10, and #13. That is, the time unit in each uplink reference signal symbol group may include a time unit corresponding to at least one of the symbol #0, #1, #2, #4, #5, #6, #7, #8, #9, #11, or #12.
  • the time unit in each uplink reference signal symbol group may be a time unit corresponding to a symbol other than the symbol #13, that is, the time unit in each uplink reference signal symbol group may include a time unit corresponding to at least one of the symbol #0, #1, #2, #3, #4, #5, #6, #7, #8, #9, #10, #11, or #12.
  • the time unit in each uplink reference signal symbol group may be a time unit corresponding to a symbol other than the symbols #3 and #10, that is, the time unit in each uplink reference signal symbol group may include a time unit corresponding to at least one of the symbol #0, #1, #2, #4, #5, #6, #7, #8, #9, #11, #12, or #13.
  • a subframe includes two timeslots, and each timeslot includes six symbols, that is, a subframe may include 12 uplink symbols, and each symbol is equivalent to a time unit.
  • FIG 7 is another schematic structural diagram of a time unit of an uplink reference signal symbol group that is designed in a subframe according to Aspect 2 of the present disclosure. As shown in FIG 7 , the subframe may include 12 symbols #0 to #11. The SRS in the uplink reference signal corresponding to the user terminal of the earlier release with a 1 ms TTI in the current cell or the neighboring cell may appear on the symbol #11, and the DM-RS in the uplink reference signal appears on the symbols #2 and #8.
  • the time unit in each uplink reference signal symbol group in the uplink reference signal position may be a symbol other than the three symbols #2, #8, and #11. That is, the time unit in each uplink reference signal symbol group may include a time unit corresponding to at least one of the symbol #0, #1, #3, #4, #5, #6, #7, #9, or #10.
  • the time unit in each uplink reference signal symbol group may be a time unit corresponding to a symbol other than the symbol #11, that is, the time unit in each uplink reference signal symbol group may include a time unit corresponding to at least one of the symbol #0, #1, #2, #3, #4, #5, #6, #7, #8, #9, or #10.
  • the time unit in each uplink reference signal symbol group may be a time unit corresponding to a symbol other than symbols #2 and #8, that is, the time unit in each uplink reference signal symbol group may include a time unit corresponding to at least one of the symbol #0, #1, #3, #4, #5, #6, #7, #9, #10, or #11.
  • the time unit of the at least one uplink reference signal symbol group included in the uplink reference signal position may be a time unit in a timeslot.
  • a timeslot includes seven symbols, and each symbol is equivalent to a time unit.
  • FIG 8 is a schematic structural diagram of a time unit of an uplink reference signal symbol group that is designed in a timeslot according to Aspect 2 of the present disclosure. As shown in FIG 8 , the timeslot includes seven symbols #0 to #6.
  • the DM-RS in the uplink reference signal corresponding to the user terminal of the earlier release with a 1 ms TTI in the current cell or the neighboring cell appears on the symbol #3, and the SRS in the uplink reference signal may appear on the symbol #6. Therefore, given a normal cyclic prefix, to avoid mutual interference between the uplink reference signal sent by the user terminal and the uplink reference signal sent by the user terminal of the earlier release with a 1 ms TTI in the current cell or the neighboring cell, symbols corresponding to the SRS and the DM-RS in the 1 ms TTI may be eschewed.
  • the time unit in each uplink reference signal symbol group in the uplink reference signal position may be a time unit corresponding to a symbol other than the symbols #3 and #6. That is, the time unit in each uplink reference signal symbol group may include a time unit corresponding to at least one of the symbol #0, #1, #2, #4, or #5.
  • the time unit in each uplink reference signal symbol group may be a time unit corresponding to a symbol other than the symbol #6, that is, the time unit in each uplink reference signal symbol group may include a time unit corresponding to at least one of the symbol #0, #1, #2, #3, #4, or #5.
  • the time unit in each uplink reference signal symbol group may be a time unit corresponding to a symbol other than the symbol #3, that is, the time unit in each uplink reference signal symbol group may include a time unit corresponding to at least one of the symbol #0, #1, #2, #4, #5, or #6.
  • a timeslot includes six symbols, and each symbol is equivalent to a time unit.
  • FIG 9 is another schematic structural diagram of a time unit of an uplink reference signal symbol group that is designed in a timeslot according to Aspect 2 of the present disclosure. As shown in FIG 9 , the timeslot may include six symbols #0 to #5.
  • the DM-RS in the uplink reference signal corresponding to the user terminal of the earlier release with a 1 ms TTI in the current cell or the neighboring cell appears on the symbol #2, and the SRS in the uplink reference signal may appear on the symbol #5.
  • the time unit in each uplink reference signal symbol group in the uplink reference signal position may be a time unit corresponding to a symbol other than the two symbols #2 and #5. That is, the time unit in each uplink reference signal symbol group may include a time unit corresponding to at least one of the symbol #0, #1, #3, or #4.
  • the time unit in each uplink reference signal symbol group may be a time unit corresponding to a symbol other than the symbol #5, that is, the time unit in each uplink reference signal symbol group may include a time unit corresponding to at least one of the symbol #0, #1, #2, #3, or #4.
  • the time unit in each uplink reference signal symbol group may be a time unit corresponding to a symbol other than the symbol #2, that is, the time unit in each uplink reference signal symbol group may include a time unit corresponding to at least one of the symbol #0, #1, #3, #4, or #5.
  • the time unit of the at least one uplink reference signal symbol group included in the uplink reference signal position may be a time unit in a timeslot.
  • a timeslot may include seven symbols, and each symbol corresponds to one time unit.
  • FIG 10 is a schematic structural diagram of an uplink reference signal position in a timeslot according to Aspect 2 of the present disclosure.
  • a cyclic prefix (CP) added to a time unit corresponding to a symbol #0 is relatively long, and a channel quality of the time unit is unsuitable for performing averaging with channel quality of other time units.
  • Time units corresponding to two symbols #3 and #6 are time units of uplink reference signals corresponding to the user terminal of the earlier release with a 1 ms TTI in the current cell or neighboring cell. Therefore, as shown in FIG 10 , the uplink reference signal position may include time units corresponding to four symbols #1, #2, #4, and #5. The four symbols may be classified into two uplink reference signal symbol groups. One of the two uplink reference signal symbol groups may include time units corresponding to the two symbols #1 and #4, and the other uplink reference signal symbol group may include time units corresponding to the two symbols #2 and #5. It should be noted that FIG 10 is merely an example of the uplink reference signal position in a timeslot.
  • One of the two uplink reference signal symbol groups may also include time units corresponding to the two symbols #1 and #5, and the other uplink reference signal symbol group may include time units corresponding to the two symbols #2 and #4.
  • the four SC-FDMA symbols may be classified into four uplink reference signal symbol groups.
  • the user terminal may select one from the two or four uplink reference signal symbol groups according to the indication information of the uplink reference signal symbol group corresponding to the user terminal in the second higher layer signaling or the first control information, as the uplink reference signal symbol group corresponding to the user terminal.
  • the time unit may be a time unit in a preset time interval, and the preset time interval includes a GP.
  • the preset time interval actually includes an idle time unit available for uplink transmission in the GP.
  • the GP may include eight symbols, and each symbol is equivalent to a time unit.
  • the time units in each uplink reference signal symbol group in the uplink reference signal position may include time units corresponding to symbols #4 to #7, that is, the user terminal may send the uplink reference signal in a time unit corresponding to at least one symbol included in the uplink reference signal symbol group corresponding to the user terminal, in the time units corresponding to the symbols #4 to #7. Therefore, the uplink reference signal position may include time units corresponding to the four symbols #4, #5, #6, and #7. The time units corresponding to the four symbols may be classified into two uplink reference signal symbol groups.
  • One of the two uplink reference signal symbol groups may include time units corresponding to the two symbols #4 and #6, and the other uplink reference signal symbol group may include time units corresponding to the two symbols #5 and #7; or one of the two uplink reference signal symbol groups may include time units corresponding to the two symbols #4 and #7, and the other uplink reference signal symbol group may include time units corresponding to the two symbols #5 and #6.
  • the time units corresponding to the four symbols may be classified into four uplink reference signal symbol groups.
  • the user terminal may select one from the two or four uplink reference signal symbol groups according to the indication information of the uplink reference signal symbol group corresponding to the user terminal in the second higher layer signaling or the first control information, as the uplink reference signal symbol group corresponding to the user terminal.
  • the uplink reference signal position further includes at least one uplink reference signal subcarrier group, and each uplink reference signal subcarrier group includes at least 12 uplink subcarriers.
  • a codeword sequence corresponding to the uplink reference signal may include a Zadoff-Chu (ZC) sequence.
  • ZC Zadoff-Chu
  • a length of the ZC sequence is at least 12 codewords. Therefore, each uplink reference signal subcarrier group includes at least 12 uplink subcarriers, and each user terminal has sufficient subcarriers to transmit sufficient codewords of the ZC sequence.
  • each user terminal in the plurality of user terminals may correspond to an uplink reference signal subcarrier group in the uplink reference signal position, that is, on a basis of performing time division multiplexing according to the uplink reference signal symbol groups corresponding to the user terminals, frequency division multiplexing may be further performed on uplink reference signals of different user terminals in the plurality of user terminals by using the uplink reference signal subcarrier groups corresponding to the user terminals, and code division multiplexing may be further performed by using uplink reference signal codewords corresponding to the user terminals. Therefore, when time domain resources are definite, in the solution of this aspect of the present disclosure, frequency division multiplexing may be further performed on the uplink reference signals corresponding to the different user terminals.
  • code division multiplexing may be further performed on the uplink reference signals. Therefore, a quantity of user terminals supported by the base station can be increased, and a system capacity can be increased.
  • FIG. 11 is a flowchart of an uplink reference signal transmission method according to Aspect 2 of the present disclosure.
  • that the user terminal sends an uplink reference signal in a time unit of the uplink reference signal symbol group corresponding to the user terminal in S303 may include:
  • the user terminal determines, in the uplink reference signal position according to the second higher layer signaling or the first control information, the uplink reference signal symbol group corresponding to the user terminal and an uplink reference signal subcarrier group corresponding to the user terminal, where the second higher layer signaling or the first control information further includes indication information of the uplink reference signal subcarrier group corresponding to the user terminal.
  • the user terminal may determine, from the at least one uplink reference signal symbol group in the uplink reference signal position according to the indication information of the uplink reference signal symbol group corresponding to the user terminal in the second higher layer signaling or the first control information, the uplink reference signal symbol group corresponding to the user terminal, and determine, from the at least one uplink reference signal subcarrier group according to the indication information of the uplink reference signal subcarrier group corresponding to the user terminal, the uplink reference signal subcarrier group corresponding to the user terminal.
  • that the user terminal sends an uplink reference signal in a time unit of the uplink reference signal symbol group corresponding to the user terminal in S303 includes:
  • the user terminal sends the uplink reference signal in the time unit of the uplink reference signal symbol group corresponding to the user terminal in a time domain and a subcarrier of the uplink signal subcarrier group corresponding to the user terminal in a frequency domain.
  • a frequency spacing of at least one subcarrier exists between every two subcarriers in the at least 12 subcarriers.
  • the user terminal sends the uplink reference signal in the at least 12 uplink subcarriers in which a frequency spacing of at least one uplink subcarrier exists between every two uplink subcarriers.
  • different user terminals may perform sending in comb-like subcarrier positions. Therefore, subcarriers in uplink reference signal subcarrier groups corresponding to different user terminals are more discrete, and it is convenient for the base station to perform channel sounding in a wider frequency domain by using uplink reference signals in limited subcarriers.
  • FIG. 12 is a flowchart of a method for determining an uplink reference signal position in an uplink reference signal transmission method according to Aspect 2 of the present disclosure. As shown in FIG 12 , optionally, that a user terminal determines an uplink reference signal position according to first higher layer signaling in S301 may include the following steps.
  • the user terminal determines uplink reference signal position information according to the first higher layer signaling, where the uplink reference signal position information includes frequency domain position information.
  • the frequency domain position information may include a physical resource block (PRB) index, a resource block group (RBG) index, a virtual resource block (VRB) index, a subcarrier index, or a subcarrier group index.
  • PRB physical resource block
  • RBG resource block group
  • VRB virtual resource block
  • a PRB and a VRB are different resource allocation units.
  • the PRB includes 12 consecutive subcarriers in the frequency domain and resources of one timeslot in the time domain. In localized resource allocation, definitions of the VRB and the PRB are the same. In distributed resource allocation, a correspondence exists between the VRB and the PRB.
  • the PRB index is an index of a PRB.
  • the VRB index is an index of a VRB. Therefore, the PRB index may be different from the VRB index.
  • An RBG may include a plurality of PRBs, that is, a quantity of PRBs included in the RBG may be determined according to bandwidth of the user terminal or configured by the base station.
  • the PRB index may be a PRB number.
  • the RBG index may be an RBG number.
  • the VRB index may be a VRB number.
  • the subcarrier index may be a subcarrier number.
  • the subcarrier group index may be a subcarrier group number.
  • a subcarrier group
  • the user terminal determines the uplink reference signal position in a preset timeslot or a preset subframe according to the frequency domain position information.
  • a frequency domain resource corresponding to the frequency domain position information is within bandwidth of a carrier of the base station. That is, in this aspect of the present disclosure, a time domain position of the at least one uplink reference signal symbol group in the uplink reference signal position may be in the preset timeslot or the preset subframe, and a frequency domain position thereof is a position indicated by the frequency domain position information.
  • Aspect 2 of the present disclosure further provides another method for determining an uplink reference signal position.
  • FIG 13 is a flowchart of another method for determining an uplink reference signal position in an uplink reference signal transmission method according to Aspect 2 of the present disclosure. As shown in FIG 13 , that a user terminal determines an uplink reference signal position according to first higher layer signaling in S301 may include the following steps.
  • the user terminal determines uplink reference signal position information according to the first higher layer signaling, where the uplink reference signal position information includes time domain position information and frequency domain position information.
  • the time domain position information may include a symbol index, a symbol group index, a timeslot index, or a subframe index.
  • a symbol may be an OFDMA symbol or an SC-FDMA symbol in an LTE communications system with a 15 kHz subcarrier spacing, or a symbol in a communications system with a greater subcarrier spacing.
  • a timeslot may be a timeslot of a 0.5 ms length in an LTE communications system with a 15 kHz subcarrier spacing, or a timeslot in a communications system with a greater subcarrier spacing, for example, a timeslot of a 0.125 ms length in a communications system with a 60 kHz subcarrier spacing.
  • a subframe may be a 1 ms subframe in an LTE system with a 15 kHz subcarrier spacing, or a subframe in a communications system with a greater subcarrier spacing, for example, a subframe of a 0.25 ms length in a communications system with a 60 kHz subcarrier spacing.
  • the user terminal determines the uplink reference signal position according to the frequency domain position information and the time domain position information.
  • a time domain position of the at least one uplink reference signal symbol group in the uplink reference signal position may be a time domain position indicated by the time domain position information, and a frequency domain position thereof may be a frequency domain position indicated by the frequency domain position information.
  • Aspect 2 of the present disclosure further provides a method for determining an uplink reference signal.
  • FIG 14 is a flowchart of an uplink reference signal transmission method according to Aspect 2 of the present disclosure. As shown in FIG 14 , optionally, before the user terminal sends the uplink reference signal in the time unit of the uplink reference signal symbol group corresponding to the user terminal in S303 in Aspect 1, the method may further include the following steps.
  • the user terminal determines, according to third higher layer signaling or received second control information of the physical channel, at least one codeword sequence corresponding to the user terminal, where the third higher layer signaling or the second control information includes indication information of the codeword sequence corresponding to the user terminal.
  • the user terminal sends an uplink reference signal in a time unit of the uplink reference signal symbol group corresponding to the user terminal in S303 may include:
  • the user terminal sends the uplink reference signal in the time unit of the uplink reference signal symbol group corresponding to the user terminal by using the at least one codeword sequence corresponding to the user terminal.
  • the at least one codeword sequence corresponding to the user terminal may be a pseudo-random sequence or an orthogonal sequence, for example, a ZC sequence.
  • the user terminal may send the uplink reference signal by using the at least one codeword sequence corresponding to the user terminal.
  • the time unit may be a time unit corresponding to an SC-FDMA symbol, or a time unit corresponding to an OFDMA symbol.
  • the uplink reference signal in each aspect of the present disclosure may include a DMRS and/or an SRS.
  • a time interval is set between every two time units in a plurality of time units in each uplink reference signal symbol group, so that each user terminal can send an uplink reference signal in non-consecutive time units in the plurality of time units. This ensures that a result of frequency offset estimation performed by the base station for the user terminal is more accurate.
  • the time unit is a time unit different from a preset time unit, mutual interference between the uplink reference signal sent by the user terminal and the uplink reference signal sent by the user terminal of the earlier release with a 1 ms TTI in the current cell or the neighboring cell can be further avoided.
  • the time unit may also be a time unit in at least one time interval in the GP, so that a time unit in a special subframe can be fully used. This reduces a time unit of an uplink reference signal in an uplink subframe, ensures uplink data transmission, and improves data transmission efficiency.
  • FIG 15 is a flowchart of the uplink reference signal transmission method according to Aspect 3 of the present disclosure. As shown in FIG 15 , the method may include the following steps.
  • a base station sends first higher layer signaling to a user terminal, where the first higher layer signaling is used by the user terminal to determine an uplink reference signal position, the uplink reference signal position includes at least one uplink reference signal symbol group, and each uplink reference signal symbol group includes at least one time unit.
  • the base station sends second higher layer signaling to the user terminal, or sends first control information to the user terminal by using a physical channel, where the second higher layer signaling or the first control information includes indication information of an uplink reference signal symbol group corresponding to the user terminal, and the indication information of the uplink reference signal symbol group corresponding to the user terminal is used to instruct the user terminal to determine, in the uplink reference signal position, the uplink reference signal symbol group corresponding to the user terminal.
  • the base station receives an uplink reference signal sent by the user terminal in a time unit of the uplink reference signal symbol group corresponding to the user terminal.
  • each uplink reference signal symbol group includes a plurality of time units, a time interval of at least one symbol exists between every two time units in the plurality of time units.
  • the time unit is a time unit different from a preset time unit
  • the preset time unit is a time unit of an uplink reference signal corresponding to a 1 ms TTI.
  • the time unit is a time unit in a preset time interval, and the preset time interval includes a GP.
  • the uplink reference signal position includes at least one uplink reference signal subcarrier group, and each uplink reference signal subcarrier group includes at least 12 uplink subcarriers;
  • each uplink reference signal subcarrier group includes at least 12 uplink subcarriers
  • a frequency spacing of at least one subcarrier exists between every two subcarriers in the at least 12 subcarriers.
  • the first higher layer signaling includes uplink reference signal position information, where the uplink reference signal position information includes frequency domain position information; and the frequency domain position information is used by the user terminal to determine the uplink reference signal position in a preset timeslot or subframe.
  • the first higher layer signaling includes uplink reference signal position information, where the uplink reference signal position information includes time domain position information and frequency domain position information; and the time domain position information and the frequency domain position information are used by the user terminal to determine the uplink reference signal position.
  • the method further includes: the base station sends the uplink reference signal position information to another base station by using an X2 interface, where the uplink reference signal position information is used to make an uplink reference signal position of the another base station different from the uplink reference signal position of the base station.
  • the method further includes:
  • the time unit is a time unit corresponding to an SC-FDMA symbol, or a time unit corresponding to an OFDMA symbol.
  • the uplink reference signal may include a DMRS and/or an SRS.
  • the uplink reference signal transmission method in Aspect 3 of the present disclosure is a transmission method corresponding to the uplink reference signal transmission method in Aspect 1 or 2.
  • a beneficial effect of the method is similar to that of the foregoing aspect. Details are not further described herein.
  • Aspect 4 of the present disclosure further provides an uplink reference signal transmission method. Assuming that a cell of a base station includes a first user terminal and a second user terminal, FIG 16A and FIG 16B are a flowchart of the uplink reference signal transmission method according to Aspect 4 of the present disclosure. As shown in FIG 16A and FIG 16B , the method may include the following steps.
  • the base station sends first uplink reference signal position information to the first user terminal, where the first uplink reference signal position information includes first time domain position information and first frequency domain position information.
  • the base station may send the first uplink reference signal position information to the first user terminal by using higher layer signaling.
  • the base station sends second uplink reference signal position information to the second user terminal, where the second uplink reference signal position information includes second time domain position information and second frequency domain position information.
  • the base station may also send the second uplink reference signal position information to the second user terminal by using higher layer signaling.
  • the higher layer signaling for sending the first uplink reference signal position information by the base station and the higher layer signaling for sending the second uplink reference signal position information by the base station may be the same or may be different.
  • the base station sends, to the first user terminal by using a physical channel, indication information of an uplink reference signal symbol group corresponding to the first user terminal and indication information of an uplink reference signal subcarrier group corresponding to the first user terminal.
  • the physical channel may be any downlink physical channel such as a PDCCH or an EPDCCH.
  • the base station sends, to the second user terminal by using a physical channel, indication information of an uplink reference signal symbol group corresponding to the second user terminal and indication information of an uplink reference signal subcarrier group corresponding to the second user terminal.
  • the physical channel for sending the indication information of the uplink reference signal symbol group corresponding to the first user terminal and the indication information of the uplink reference signal subcarrier group corresponding to the first user terminal by the base station may be the same as or may be different from the physical channel for sending the indication information of the uplink reference signal symbol group corresponding to the second user terminal and the indication information of the uplink reference signal subcarrier group corresponding to the second user terminal.
  • the base station sends the first uplink reference signal position information and the second uplink reference signal position information to another base station by using an X2 interface, where the first uplink reference signal position information and the second uplink reference signal position information are used to make an uplink reference signal position of the another base station different from the uplink reference signal positions of the base station.
  • the uplink reference signal positions of the base station may include a first uplink reference signal position and a second uplink reference signal position.
  • the first user terminal determines a first uplink reference signal position according to the first time domain position information and the first frequency domain position information, and determines, in the first uplink reference signal position according to the indication information of the uplink reference signal symbol group corresponding to the first user terminal and the indication information of the uplink reference signal subcarrier group corresponding to the first user terminal, the uplink reference signal symbol group corresponding to the first user terminal and the uplink reference signal subcarrier group corresponding to the first user terminal.
  • the base station sends indication information of a first codeword sequence to the first user terminal.
  • the base station may send the indication information of the first codeword sequence to the first user terminal by using higher layer signaling or a physical channel.
  • the first user terminal determines, according to the indication information of the first codeword sequence, the first codeword sequence corresponding to the first user terminal, and sends an uplink reference signal of the first user terminal to the base station in a time unit of the uplink reference signal symbol group corresponding to the first user terminal in a time domain and a subcarrier of the uplink reference signal subcarrier group corresponding to the first user terminal in a frequency domain by using the first codeword sequence.
  • the second user terminal determines a second uplink reference signal position according to the second time domain position information and the second frequency domain position information, and determines, in the second uplink reference signal position according to the indication information of the uplink reference signal symbol group corresponding to the second user terminal and the indication information of the uplink reference signal subcarrier group corresponding to the second user terminal, the uplink reference signal symbol group corresponding to the second user terminal and the uplink reference signal subcarrier group corresponding to the second user terminal.
  • the second uplink reference signal position determined by the second user terminal and the first uplink reference signal position determined by the first user terminal may be the same or may be different.
  • the uplink reference signal symbol group corresponding to the second user terminal and determined by the second user terminal and the uplink reference signal symbol group corresponding to the first user terminal and determined by the first user terminal may be the same or may be different.
  • the uplink reference signal subcarrier group corresponding to the second user terminal and determined by the second user terminal and the uplink reference signal subcarrier group corresponding to the first user terminal and determined by the first user terminal may be the same or may be different.
  • the base station sends indication information of a second codeword sequence to the second user terminal.
  • the base station may send the indication information of the second codeword sequence to the second user terminal by using higher layer signaling or a physical channel.
  • the base station may send the indication information of the first codeword sequence and the indication information of the second codeword sequence by using the same or different higher layer signaling, or may send the indication information of the first codeword sequence and the indication information of the second codeword sequence by using the same or different physical channels.
  • the base station may also send the indication information of the first codeword sequence by using higher layer signaling, and send the indication information of the second codeword sequence by using a physical channel.
  • the base station may also send the indication information of the second codeword sequence by using higher layer signaling, and send the indication information of the first codeword sequence by using a physical channel.
  • the second user terminal determines, according to the indication information of the second codeword sequence, the second codeword sequence of the second user terminal, and sends an uplink reference signal of the second user terminal to the base station in a time unit of the uplink reference signal symbol group corresponding to the second user terminal in the time domain and a subcarrier of the uplink reference signal subcarrier group corresponding to the second user terminal in the frequency domain by using the second codeword sequence.
  • the base station receives, in the uplink reference signal symbol group corresponding to the first user terminal in the time domain and the uplink reference signal subcarrier group corresponding to the first user terminal in the frequency domain, the uplink reference signal of the first user terminal that is sent by the first user terminal by using the first codeword sequence, and receives, in the time unit of the uplink reference signal symbol group corresponding to the second user terminal in the time domain and the subcarrier of the uplink reference signal subcarrier group corresponding to the second user terminal in the frequency domain, the uplink reference signal of the second user terminal that is sent by the second user terminal by using the second codeword sequence.
  • the uplink reference signal transmission method in Aspect 4 of the present disclosure is described in the foregoing aspect by using a specific example. A beneficial effect of the method is similar to that of the foregoing aspect. Details are not further described herein.
  • Aspect 5 of the present disclosure further provides a user terminal.
  • the user terminal provided by this aspect may be configured to perform the uplink reference signal transmission method in Aspect 1 or Aspect 2.
  • FIG 17 is a schematic structural diagram of the user terminal according to Aspect 5 of the present disclosure. As shown in FIG 17 , the user terminal 1700 may include a determining module 1701 and a sending module 1702.
  • the determining module 1701 is configured to determine an uplink reference signal position according to first higher layer signaling, where the uplink reference signal position includes at least one uplink reference signal symbol group, and each uplink reference signal symbol group includes at least one time unit; and determine, in the uplink reference signal position according to second higher layer signaling or received first control information of a physical channel, an uplink reference signal symbol group corresponding to the user terminal, where the second higher layer signaling or the first control information includes indication information of the uplink reference signal symbol group corresponding to the user terminal.
  • the sending module 1702 is configured to send an uplink reference signal in a time unit of the uplink reference signal symbol group corresponding to the user terminal.
  • each uplink reference signal symbol group includes a plurality of time units
  • a time interval of at least one time unit exists between every two time units in the plurality of time units.
  • the time unit is a time unit different from a preset time unit
  • the preset time unit is a time unit of an uplink reference signal corresponding to a 1 ms TTI.
  • the time unit includes a time unit in a preset time interval, and the preset time interval includes a guard period.
  • the uplink reference signal position further includes at least one uplink reference signal subcarrier group, and each uplink reference signal subcarrier group includes at least 12 uplink subcarriers;
  • a frequency spacing of at least one subcarrier exists between every two subcarriers in the at least 12 uplink subcarriers.
  • the determining module 1701 is further configured to determine uplink reference signal position information according to the first higher layer signaling, where the uplink reference signal position information includes frequency domain position information; and determine the uplink reference signal position in a preset timeslot or subframe according to the frequency domain position information.
  • the determining module 1701 is further configured to determine uplink reference signal position information according to the first higher layer signaling, where the uplink reference signal position information includes time domain position information and frequency domain position information; and determine the uplink reference signal position according to the frequency domain position information and the time domain position information.
  • the determining module 1701 is further configured to determine, according to third higher layer signaling or received second control information of the physical channel, at least one codeword sequence corresponding to the user terminal, where the third higher layer signaling or the second control information includes indication information of the codeword sequence corresponding to the user terminal; and the sending module 1702 is specificallyconfigured to send the uplink reference signal in the time unit of the uplink reference signal symbol group corresponding to the user terminal by using the at least one codeword sequence corresponding to the user terminal.
  • the time unit is a time unit corresponding to an SC-FDMA symbol, or a time unit corresponding to an OFDMA symbol.
  • the user terminal provided by Aspect 5 of the present disclosure can perform the uplink reference signal transmission method in Aspect 1 or Aspect 2.
  • Aspect 1 For a beneficial effect and an implementation process of the user terminal, refer to the descriptions in the foregoing aspect. Details are not further described herein.
  • FIG 18 is a schematic structural diagram of the base station according to Aspect 6 of the present disclosure. As shown in FIG 18 , the base station 1800 includes a sending module 1801 and a receiving module 1802.
  • the sending module 1801 is configured to send first higher layer signaling to a user terminal, and send second higher layer signaling to the user terminal or send first control information to the user terminal by using a physical channel, where the first higher layer signaling is used by the user terminal to determine an uplink reference signal position, the uplink reference signal position includes at least one uplink reference signal symbol group, and each uplink reference signal symbol group includes at least one time unit; the second higher layer signaling or the first control information includes indication information of an uplink reference signal symbol group corresponding to the user terminal, and the indication information of the uplink reference signal symbol group corresponding to the user terminal is used to instruct the user terminal to determine, in the uplink reference signal position, the uplink reference signal symbol group corresponding to the user terminal.
  • the receiving module 1802 is configured to receive an uplink reference signal sent by the user terminal in a time unit of the uplink reference signal symbol group corresponding to the user terminal.
  • each uplink reference signal symbol group includes a plurality of time units, a time interval of at least one symbol exists between every two time units in the plurality of time units.
  • the time unit is a time unit different from a preset time unit
  • the preset time unit is a time unit of an uplink reference signal corresponding to a 1 ms TTI.
  • the time unit is a time unit in a preset time interval, and the preset time interval includes a GP.
  • the uplink reference signal position further includes at least one uplink reference signal subcarrier group, and each uplink reference signal subcarrier group includes at least 12 uplink subcarriers;
  • a frequency spacing of at least one subcarrier exists between every two subcarriers in the at least 12 subcarriers.
  • the first higher layer signaling includes uplink reference signal position information, where the uplink reference signal position information includes frequency domain position information; and the frequency domain position information is used by the user terminal to determine the uplink reference signal position in a preset timeslot or subframe.
  • the first higher layer signaling includes uplink reference signal position information, where the uplink reference signal position information includes time domain position information and frequency domain position information; and the time domain position information and the frequency domain position information are used by the user terminal to determine the uplink reference signal position.
  • the sending module 1801 is specificallyconfigured to send the uplink reference signal position information to another base station by using an X2 interface, where the uplink reference signal position information is used to make an uplink reference signal position of the another base station different from the uplink reference signal position of the base station.
  • the sending module 1801 is further configured to send third higher layer signaling to the user terminal, or send second control information to the user terminal by using the physical channel, where the third higher layer signaling or the second control information includes indication information of a codeword sequence corresponding to the user terminal, and the indication information of the codeword sequence corresponding to the user terminal is used to instruct the user terminal to determine at least one codeword sequence corresponding to the user terminal; and the receiving module 1802 is specifically configured to receive the uplink reference signal sent by the user terminal in the time unit of the uplink reference signal symbol group corresponding to the user terminal by using the at least one codeword sequence corresponding to the user terminal.
  • the time unit is a time unit corresponding to an SC-FDMA symbol, or a time unit corresponding to an OFDMA symbol.
  • the base station provided by Aspect 6 of the present disclosure can perform the uplink reference signal transmission method in Aspect 3.
  • Aspect 3 For a beneficial effect and an implementation process of the base station, refer to the descriptions in the foregoing aspect. Details are not further described herein.
  • FIG 19 is a schematic structural diagram of the user terminal according to Aspect 7 of the present disclosure.
  • the user terminal 1900 may include a processor 1901 and a transmitter 1902.
  • the processor 1901 is configured to determine an uplink reference signal position according to first higher layer signaling, where the uplink reference signal position includes at least one uplink reference signal symbol group, and each uplink reference signal symbol group includes at least one time unit; and determine, in the uplink reference signal position according to second higher layer signaling or received first control information of a physical channel, an uplink reference signal symbol group corresponding to the user terminal, where the second higher layer signaling or the first control information includes indication information of the uplink reference signal symbol group corresponding to the user terminal.
  • the transmitter 1902 is configured to send an uplink reference signal in a time unit of the uplink reference signal symbol group corresponding to the user terminal.
  • each uplink reference signal symbol group includes a plurality of time units
  • a time interval of at least one time unit exists between every two time units in the plurality of time units.
  • the time unit is a time unit different from a preset time unit
  • the preset time unit is a time unit of an uplink reference signal corresponding to a 1 ms TTI.
  • the time unit includes a time unit in a preset time interval, and the preset time interval includes a guard period.
  • the uplink reference signal position further includes at least one uplink reference signal subcarrier group, and each uplink reference signal subcarrier group includes at least 12 uplink subcarriers;
  • a frequency spacing of at least one subcarrier exists between every two subcarriers in the at least 12 uplink subcarriers.
  • the processor 1901 is further configured to determine uplink reference signal position information according to the first higher layer signaling, where the uplink reference signal position information includes frequency domain position information; and determine the uplink reference signal position in a preset timeslot or subframe according to the frequency domain position information.
  • the processor 1901 is further configured to determine uplink reference signal position information according to the first higher layer signaling, where the uplink reference signal position information includes time domain position information and frequency domain position information; and determine the uplink reference signal position according to the frequency domain position information and the time domain position information.
  • the processor 1901 is further configured to determine, according to third higher layer signaling or received second control information of the physical channel, at least one codeword sequence corresponding to the user terminal, where the third higher layer signaling or the second control information includes indication information of the codeword sequence corresponding to the user terminal; and the transmitter 1902 is specificallyconfigured to send the uplink reference signal in the time unit of the uplink reference signal symbol group corresponding to the user terminal by using the at least one codeword sequence corresponding to the user terminal.
  • the time unit is a time unit corresponding to an SC-FDMA symbol, or a time unit corresponding to an OFDMA symbol.
  • the user terminal provided by Aspect 7 of the present disclosure can perform the uplink reference signal transmission method in Aspect 1 or Aspect 2.
  • Aspect 7 of the present disclosure can perform the uplink reference signal transmission method in Aspect 1 or Aspect 2.
  • FIG 20 is a schematic structural diagram of the base station according to Aspect 8 of the present disclosure.
  • the base station 2000 includes a transmitter 2001 and a receiver 2002.
  • the transmitter 2001 is configured to send first higher layer signaling to a user terminal, and send second higher layer signaling to the user terminal or send first control information to the user terminal by using a physical channel, where the first higher layer signaling is used by the user terminal to determine an uplink reference signal position, the uplink reference signal position includes at least one uplink reference signal symbol group, and each uplink reference signal symbol group includes at least one time unit; the second higher layer signaling or the first control information includes indication information of an uplink reference signal symbol group corresponding to the user terminal, and the indication information of the uplink reference signal symbol group corresponding to the user terminal is used to instruct the user terminal to determine, in the uplink reference signal position, the uplink reference signal symbol group corresponding to the user terminal.
  • the receiver 2002 is configured to receive an uplink reference signal sent by the user terminal in a time unit of the uplink reference signal symbol group corresponding to the user terminal.
  • each uplink reference signal symbol group includes a plurality of time units, a time interval of at least one symbol exists between every two time units in the plurality of time units.
  • the time unit is a time unit different from a preset time unit
  • the preset time unit is a time unit of an uplink reference signal corresponding to a 1 ms TTI.
  • the time unit is a time unit in a preset time interval, and the preset time interval includes a GP.
  • the uplink reference signal position further includes at least one uplink reference signal subcarrier group, and each uplink reference signal subcarrier group includes at least 12 uplink subcarriers;
  • a frequency spacing of at least one subcarrier exists between every two subcarriers in the at least 12 subcarriers.
  • the first higher layer signaling includes uplink reference signal position information, where the uplink reference signal position information includes frequency domain position information; and the frequency domain position information is used by the user terminal to determine the uplink reference signal position in a preset timeslot or subframe.
  • the first higher layer signaling includes uplink reference signal position information, where the uplink reference signal position information includes time domain position information and frequency domain position information; and the time domain position information and the frequency domain position information are used by the user terminal to determine the uplink reference signal position.
  • the transmitter 2001 is specificallyconfigured to send the uplink reference signal position information to another base station by using an X2 interface, where the uplink reference signal position information is used to make an uplink reference signal position of the another base station different from the uplink reference signal position of the base station.
  • the transmitter 2001 is further configured to send third higher layer signaling to the user terminal, or send second control information to the user terminal by using the physical channel, where the third higher layer signaling or the second control information includes indication information of a codeword sequence corresponding to the user terminal, and the indication information of the codeword sequence corresponding to the user terminal is used to instruct the user terminal to determine at least one codeword sequence corresponding to the user terminal; and the receiver 2002 is specifically configured to receive the uplink reference signal sent by the user terminal in the time unit of the uplink reference signal symbol group corresponding to the user terminal by using the at least one codeword sequence corresponding to the user terminal.
  • the time unit is a time unit corresponding to an SC-FDMA symbol, or a time unit corresponding to an OFDMA symbol.
  • the base station provided by Aspect 8 of the present disclosure can perform the uplink reference signal transmission method in Aspect 3.
  • Aspect 3 For a beneficial effect and an implementation process of the base station, refer to the descriptions in the foregoing aspect. Details are not further described herein.
  • FIG 21 is a schematic structural diagram of the network system according to Aspect 9 of the present disclosure.
  • the network system 2100 may include at least one base station 2101 and at least one user terminal 2102 in a cell of each of the at least one base station.
  • Each of the at least one base station 2101 may be the base station in Aspect 6 or Aspect 8, and can perform the uplink reference signal transmission method provided by Aspect 3.
  • Each of the at least one user terminal 2102 may be the user terminal in Aspect 5 or Aspect 7, and can perform the uplink reference signal transmission method in Aspect 1 or Aspect 2.
  • For a specific structure of each user terminal refer to the user terminal in Aspect 5 or Aspect 7. Details are not further described herein.
  • Each of the at least one base station 2101 and the at least one user terminal 2102 in the cell of each base station can jointly perform the uplink reference signal transmission method in Aspect 4. If the network system 2100 includes at least two base stations 2101, a message may be transmitted between every two base stations in the at least two base stations 2101 by using an X2 interface.
  • the base station and the user terminal can perform the uplink reference signal transmission method provided by the foregoing aspect.
  • a beneficial effect of the network system is similar to that of the foregoing aspect. Details are not further described herein.
  • the program may be stored in a computer readable storage medium.
  • the foregoing storage medium includes: any medium that can store program code, such as a ROM, a RAM, a magnetic disk, or an optical disc.

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Claims (11)

  1. Uplink-Referenzsignal-Übertragungsverfahren, das Folgendes umfasst:
    Bestimmen (301), durch ein Benutzerendgerät, einer Uplink-Referenzsignalposition gemäß einer ersten Signalisierung höherer Schicht, wobei die Uplink-Referenzsignalposition mindestens eine Uplink-Referenzsignalsymbolgruppe umfasst und jede Uplink-Referenzsignalsymbolgruppe mehrere Zeiteinheiten umfasst, ein Zeitintervall mindestens einer Zeiteinheit zwischen jeweils zwei Zeiteinheiten in den mehreren Zeiteinheiten vorhanden ist, wobei die Zeiteinheit eine Zeiteinheit ist, die einem "Single-Carrier-Frequency-Division-Multiple-Access"- bzw. SC-FDMA-Symbol entspricht, oder eine Zeiteinheit ist, die einem "Orthogonal-Frequency-Division-Multiple-Access"- bzw. OFDMA-Symbol entspricht, die mindestens eine Uplink-Referenzsignalsymbolgruppe innerhalb 14 Symbolen liegt; wobei die Uplink-Referenzsignalposition ferner mindestens eine Uplink-Referenzsignalsubträgergruppe umfasst und jede Uplink-Referenzsignalsubträgergruppe mindestens 12 Uplink-Subträger umfasst;
    Bestimmen (302), durch das Benutzerendgerät, an der Uplink-Referenzsignalposition gemäß empfangenen ersten Steuerinformationen eines physischen Kanals, einer Uplink-Referenzsignalsymbolgruppe und einer Uplink-Referenzsignalsubträgergruppe, die dem Benutzerendgerät entsprechen, wobei die ersten Steuerinformationen Angabeinformationen der Uplink-Referenzsignalsymbolgruppe und Angabeinformationen der Uplink-Referenzsignalsubträgergruppe umfassen; und
    Senden (303), durch das Benutzerendgerät, eines Uplink-Referenzsignals in einer Zeiteinheit der dem Benutzerendgerät entsprechenden Uplink-Referenzsignalsymbolgruppe im Zeitbereich und in einem Subträger der dem Benutzerendgerät entsprechenden Uplink-Signalsubträgergruppe im Frequenzbereich.
  2. Verfahren nach Anspruch 1, wobei ein Frequenzabstand mindestens eines Subträgers zwischen jeweils zwei Subträgern in den mindestens 12 Uplink-Subträgern besteht.
  3. Verfahren nach Anspruch 1 oder 2, wobei das Bestimmen, durch ein Benutzerendgerät, einer Uplink-Referenzsignalposition gemäß einer ersten Signalisierung höherer Schicht Folgendes umfasst:
    Bestimmen, durch das Benutzerendgerät, von Uplink-Referenzsignalpositionsinformationen gemäß der ersten Signalisierung höherer Schicht, wobei die Uplink-Referenzsignalpositionsinformationen Frequenzbereichspositionsinformationen umfassen; und
    Bestimmen, durch das Benutzerendgerät, der Uplink-Referenzsignalposition in einem voreingestellten Zeitschlitz oder Subframe gemäß den Frequenzbereichspositionsinformationen.
  4. Verfahren nach Anspruch 1 oder 2, wobei das Bestimmen, durch ein Benutzerendgerät, einer Uplink-Referenzsignalposition gemäß einer ersten Signalisierung höherer Schicht Folgendes umfasst:
    Bestimmen, durch das Benutzerendgerät, von Uplink-Referenzsignalpositionsinformationen gemäß der ersten Signalisierung höherer Schicht, wobei die Uplink-Referenzsignalpositionsinformationen Zeitbereichspositionsinformationen und Frequenzbereichspositionsinformationen umfassen; und
    Bestimmen, durch das Benutzerendgerät, der Uplink-Referenzsignalposition gemäß den Frequenzbereichspositionsinformationen und den Zeitbereichspositionsinformationen.
  5. Uplink-Referenzsignal-Übertragungsverfahren, das Folgendes umfasst:
    Senden (1501), durch eine Basisstation, einer ersten Signalisierung höherer Schicht an ein Benutzerendgerät, wobei die erste Signalisierung höherer Schicht durch das Benutzerendgerät verwendet wird zum Bestimmen einer Uplink-Referenzsignalposition, wobei die Uplink-Referenzsignalposition mindestens eine Uplink-Referenzsignalsymbolgruppe umfasst und jede Uplink-Referenzsignalsymbolgruppe mehrere Zeiteinheiten umfasst, ein Zeitintervall mindestens einer Zeiteinheit zwischen jeweils zwei Zeiteinheiten in den mehreren Zeiteinheiten vorhanden ist, wobei die Zeiteinheit eine Zeiteinheit ist, die einem "Single-Carrier-Frequency-Division-Multiple-Access"- bzw. SC-FDMA-Symbol entspricht, oder eine Zeiteinheit ist, die einem "Orthogonal-Frequency-Division-Multiple-Access"- bzw. OFDMA-Symbol entspricht, die mindestens eine Uplink-Referenzsignalsymbolgruppe innerhalb 14 Symbolen liegt; wobei die Uplink-Referenzsignalposition ferner mindestens eine Uplink-Referenzsignalsubträgergruppe umfasst und jede Uplink-Referenzsignalsubträgergruppe mindestens 12 Uplink-Subträger umfasst;
    Senden (1502), durch die Basisstation, von ersten Steuerinformationen an das Benutzerendgerät unter Verwendung eines physischen Kanals, wobei die ersten Steuerinformationen Angabeinformationen einer Uplink-Referenzsignalsymbolgruppe und Angabeinformationen einer Uplink-Referenzsignalsubträgergruppe, die dem Benutzerendgerät entsprechen, umfassen, und die Angabeinformationen der Uplink-Referenzsignalsymbolgruppe verwendet werden, um das Benutzerendgerät dazu anzuweisen an der Uplink-Referenzsignalposition eine Uplink-Referenzsignalsymbolgruppe zu bestimmen, und die Angabeinformationen der Uplink-Referenzsignalsubträgergruppe verwendet werden, um das Benutzerendgerät dazu anzuweisen die Uplink-Referenzsignalsubträgergruppe zu bestimmen; und
    Empfangen (1503), durch die Basisstation, eines durch das Benutzerendgerät gesendeten Uplink-Referenzsignals in einer Zeiteinheit der dem Benutzerendgerät entsprechenden Uplink-Referenzsignalsymbolgruppe im Zeitbereich und in einem Subträger der dem Benutzerendgerät entsprechenden Uplink-Signalsubträgergruppe im Frequenzbereich.
  6. Verfahren nach Anspruch 5, wobei ein Frequenzabstand mindestens eines Subträgers zwischen jeweils zwei Subträgern in den mindestens 12 Subträgern besteht.
  7. Verfahren nach Anspruch 5 oder 6, wobei die erste Signalisierung höherer Schicht Uplink-Referenzsignalpositionsinformationen umfasst, wobei die Uplink-Referenzsignalpositionsinformationen Frequenzbereichspositionsinformationen umfassen; und
    die Frequenzbereichspositionsinformationen durch das Benutzerendgerät dazu verwendet werden, die Uplink-Referenzsignalposition in einem voreingestellten Zeitschlitz oder Subframe zu bestimmen.
  8. Verfahren nach Anspruch 5 oder 6, wobei die erste Signalisierung höherer Schicht Uplink-Referenzsignalpositionsinformationen umfasst, wobei die Uplink-Referenzsignalpositionsinformationen Zeitbereichspositionsinformationen und Frequenzbereichspositionsinformationen umfassen; und
    die Zeitbereichspositionsinformationen und die Frequenzbereichspositionsinformationen durch das Benutzerendgerät dazu verwendet werden, die Uplink-Referenzsignalposition zu bestimmen.
  9. Verfahren nach Anspruch 7 oder 8, wobei das Verfahren ferner Folgendes umfasst:
    Senden, durch die Basisstation, der Uplink-Referenzsignalpositionsinformationen an eine weitere Basisstation unter Verwendung einer X2-Schnittstelle, wobei die Uplink-Referenzsignalpositionsinformationen verwendet werden, um zu bewirken, dass sich eine Uplink-Referenzsignalposition der weiteren Basisstation von der Uplink-Referenzsignalposition der Basisstation unterscheidet.
  10. Benutzerendgerät, das Mittel zum Durchführen des Verfahrens nach einem der Ansprüche 1 bis 4 umfasst.
  11. Basisstation, die Mittel zum Durchführen des Verfahrens nach einem der Ansprüche 5 bis 9 umfasst.
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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7096156B2 (ja) * 2016-09-16 2022-07-05 株式会社Ｎｔｔドコモ 端末、無線通信方法及びシステム
US10791576B2 (en) 2017-05-03 2020-09-29 Lg Electronics Inc. Method and apparatus for transmitting and receiving random access channel
CN110113817B (zh) * 2018-02-01 2021-06-25 上海朗帛通信技术有限公司 一种基站、用户设备中的用于无线通信的方法和装置
CN112789816A (zh) * 2018-08-03 2021-05-11 株式会社Ntt都科摩 用户终端
US20200137715A1 (en) * 2018-10-31 2020-04-30 Qualcomm Incorporated System and methods for supporting uplink and downlink positioning procedures in a wireless network
EP3681226A1 (de) * 2019-01-10 2020-07-15 Fraunhofer Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und vorrichtungen zur ressourcenzuweisung in einem telekommunikationsnetzwerk
US11252591B2 (en) 2019-05-20 2022-02-15 Telefonaktiebolaget Lm Ericsson (Publ) High frequency wireless communication network
CN114731257A (zh) * 2020-01-10 2022-07-08 华为技术有限公司 上行信道解调方法和上行信道解调装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2731284A2 (de) * 2011-07-04 2014-05-14 LG Electronics Inc. Verfahren zum senden und empfangen eines referenzsignals in einem drahtlosen verbindungssystem und endgerät dafür
WO2014208859A1 (en) * 2013-06-26 2014-12-31 Lg Electronics Inc. Grouping based reference signal transmission for massive mimo scheme

Family Cites Families (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5014820B2 (ja) * 2007-01-09 2012-08-29 株式会社エヌ・ティ・ティ・ドコモ 移動通信システム、ユーザ装置及び通信方法
US8203987B2 (en) * 2007-03-30 2012-06-19 Ntt Docomo, Inc. Mobile communications system, base station apparatus, user apparatus, and method
US20090046645A1 (en) * 2007-08-13 2009-02-19 Pierre Bertrand Uplink Reference Signal Sequence Assignments in Wireless Networks
WO2009128285A1 (ja) * 2008-04-17 2009-10-22 シャープ株式会社 移動局装置および通信システム
US20120082058A1 (en) * 2009-07-02 2012-04-05 Dirk Gerstenberger Improved mobility management in a coordinated multipoint network
WO2011084004A2 (ko) * 2010-01-07 2011-07-14 엘지전자 주식회사 무선 통신 시스템에서 참조 신호 시퀀스 생성 방법 및 장치
CN101795145B (zh) * 2010-02-08 2014-11-05 中兴通讯股份有限公司 测量参考信号的发送方法及系统
US9031035B2 (en) * 2010-04-30 2015-05-12 Panasonic Intellectual Property Corporation Of America Transmitter apparatus, receiver apparatus, transmission method, and notification method
JP4928621B2 (ja) * 2010-05-27 2012-05-09 シャープ株式会社 無線通信システム、基地局装置、移動局装置、無線通信方法および集積回路
KR20120034521A (ko) * 2010-10-01 2012-04-12 주식회사 팬택 다중 요소 반송파 시스템에서 사운딩 기준 신호의 전송 방법 및 장치
JP5009410B2 (ja) * 2010-10-29 2012-08-22 シャープ株式会社 移動局装置、無線通信方法および集積回路
US9042277B2 (en) * 2011-04-11 2015-05-26 Qualcomm Incorporated Transmission of control information for FDD-TDD carrier aggregation
WO2012150823A2 (ko) * 2011-05-05 2012-11-08 엘지전자 주식회사 하향링크 신호 수신방법 및 사용자기기와, 하향링크 신호 전송방법 및 기지국
CN102223726A (zh) * 2011-06-10 2011-10-19 中兴通讯股份有限公司 一种srs的发送方法和系统
CN102958154B (zh) * 2011-08-24 2015-05-27 华为技术有限公司 用户设备的定位方法及装置
CN103095442A (zh) * 2011-10-31 2013-05-08 中兴通讯股份有限公司 探测参考信号配置方法及装置
CN103096389A (zh) * 2011-11-07 2013-05-08 华为技术有限公司 上行参考信号的发送方法、用户设备和基站
US8942083B2 (en) * 2011-11-25 2015-01-27 Electronics And Telecommunications Research Institute Apparatus and method for transmitting uplink data
JP5924403B2 (ja) * 2012-03-29 2016-05-25 ソニー株式会社 無線通信装置及び無線通信方法、並びに無線通信システム
CN104412676B (zh) * 2012-06-26 2018-11-16 Lg电子株式会社 无线通信系统中的d2d通信的同步方法和同步设备
CN104685948A (zh) * 2012-09-27 2015-06-03 夏普株式会社 终端、通信方法以及集成电路
US10003452B2 (en) * 2012-11-09 2018-06-19 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for operation with carrier aggregation of time division duplex cells
EP2942888B1 (de) * 2013-01-07 2018-08-01 LG Electronics Inc. Verfahren zum empfangen von abwärtssignalen von mehreren sendepunkten durch ein nutzergerät und entsprechendes nutzergerät
JP6139569B2 (ja) * 2013-01-09 2017-05-31 シャープ株式会社 ユーザ装置、通信方法、集積回路、および基地局装置
CN105453677B (zh) * 2013-08-23 2019-04-02 夏普株式会社 终端装置、基站装置、通信方法以及集成电路
WO2015068595A1 (ja) * 2013-11-08 2015-05-14 シャープ株式会社 端末装置、基地局装置、通信方法、および集積回路
EP3068179B1 (de) * 2013-12-13 2021-02-03 Huawei Technologies Co., Ltd. Interferenzkoordinierungsverfahren, -vorrichtung und -system
CN105850207B (zh) * 2013-12-26 2019-11-15 夏普株式会社 终端装置、基站装置以及通信方法
EP3089526B1 (de) * 2013-12-27 2022-08-03 Sharp Kabushiki Kaisha Endgerätevorrichtung und verfahren
WO2015115454A1 (ja) * 2014-01-30 2015-08-06 シャープ株式会社 端末装置、基地局装置、および、通信方法
CN105960824B (zh) * 2014-01-30 2020-02-18 夏普株式会社 终端装置、基站装置以及通信方法
JP2017085188A (ja) * 2014-03-13 2017-05-18 シャープ株式会社 端末装置、基地局装置および通信方法
WO2016041146A1 (zh) * 2014-09-16 2016-03-24 华为技术有限公司 移动终端定位方法、基站以及节点
CN107079307A (zh) * 2014-09-25 2017-08-18 株式会社Ntt都科摩 基站和用户装置
US9565676B1 (en) * 2014-12-19 2017-02-07 Sprint Spectrum L.P. Methods and systems for serving a mobility-limited user equipment device using carrier aggregation
TWI602462B (zh) * 2015-01-30 2017-10-11 財團法人資訊工業策進會 使用者裝置、裝置對裝置使用者裝置、後端裝置及其定位方法
WO2016186425A1 (ko) * 2015-05-18 2016-11-24 엘지전자 주식회사 무선 통신 시스템에서 셀 커버리지를 고려하여 반복 패턴에 따라 상향링크 참조 신호를 설계하는 방법 및 장치

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2731284A2 (de) * 2011-07-04 2014-05-14 LG Electronics Inc. Verfahren zum senden und empfangen eines referenzsignals in einem drahtlosen verbindungssystem und endgerät dafür
WO2014208859A1 (en) * 2013-06-26 2014-12-31 Lg Electronics Inc. Grouping based reference signal transmission for massive mimo scheme

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CN107113808A (zh) 2017-08-29
US20200336266A1 (en) 2020-10-22
EP4362378A2 (de) 2024-05-01
US10735159B2 (en) 2020-08-04
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